Advertisements
Advertisements
प्रश्न
x2 + (a + b)x + ab = (a + b)(x + ab)
पर्याय
True
False
Advertisements
उत्तर
This statement is False.
Explanation:
We need to factorize x2 + (a + b)x + ab,
By splitting the middle term:
x2 + (a + b)x + ab = x2 + ax + bx + ab ...[∵ ax + bx = (a + b)x and ax × bx = abx2]
⇒ x2 + (a + b)x + ab = x(x + a) + b(x + a)
⇒ x2 + (a + b)x + ab = (x + a)(x + b)
And (x + a)(x + b) ≠ (a + b)(x + ab)
⇒ x2 + (a + b)x + ab ≠ (a + b)(x + ab)
APPEARS IN
संबंधित प्रश्न
Expand.
(p + 8) (p − 3)
Expand.
(13 + x) (13 − x)
Expand.
(3x + 4y) (3x + 5y)
Expand.
(9x − 5t) (9x + 3t)
Expand.
`(x + 1/x)(x - 1/x)`
Expand: `(m + 3/2)(m + 1/2)`.
Expand: (x - 3)(x - 7).
Using the identity (x + a)(x + b) = x2 + x(a + b) + ab, find the following product
(8 + pq)(pq + 7)
Multiply the following:
(x2 – 5x + 6), (2x + 7)
Using suitable identities, evaluate the following.
101 × 103
